Litter box door



FIG. 1 is a front perspective view of the litter box door showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view thereof.

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a reduced illustrative front view, shown in use, attached to a litter box shown in phantom lines.

The portions rendered in broken line are for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a litter box door, as shown and described. 